<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    * {
      padding: 0;
      margin: 0;
    }
    .container {
      padding: 30px;
      display: grid;
      width: 400px;
      height: 500px;
      grid-template-columns: repeat(4, 1fr);
      grid-template-rows: repeat(5, 1fr);
      gap: 10px;
    }
    .key {
      background-color: #fff;
      border-radius: 6px;
      box-shadow: 3px 3px 9px #828282, -3px -3px 9px #fff;
      font-size: 20px;
      display: flex;
      justify-content: center;
      align-items: center;
      text-align: center;
    }
    .key:nth-child(8) {
      grid-column: 4 / 5;
      grid-row: 2 / 4;
    }
    .key:nth-child(17) {
      grid-column: 4 / 5;
      grid-row: 4 / 6;
    }
    .key:nth-child(15) {
      grid-column: 1 / 3;
      grid-row: 5 / 6;
    }
  </style>
</head>
<body>
  <div class="container">
    <div class="key">Num Lock</div>
    <div class="key">/</div>
    <div class="key">*</div>
    <div class="key">-</div>
    <div class="key">7</div>
    <div class="key">8</div>
    <div class="key">9</div>
    <div class="key">+</div>
    <div class="key">4</div>
    <div class="key">5</div>
    <div class="key">6</div>
    <div class="key">1</div>
    <div class="key">2</div>
    <div class="key">3</div>
    <div class="key">0</div>
    <div class="key">.</div>
    <div class="key">Enter</div>
  </div>
</body>
</html>